Anyone using a BOB trailer with Stromer ST-1?

I am looking into using a BOB trailer with my ST-1. The way the rear axle works makes mounting a BOB trailer a bit challenging. I saw on Stromer's website that they actually sell a mounting plate--(Art. 213522). I called Stromer in San Diego to see about getting the plate, but was told there was no such thing. I provided the part number above and then was told they'd have to speak with headquarters in Switzerland to get them--they don't stock them in the US.

Hoping someone here may have some ideas or advice?